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प्रश्न
Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.
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उत्तर
Zone of reduction:-
Carbon monoxide reduces ferric oxide to spongy iron (porous solid) at about 900 K.
\[\ce{3Fe^2O^3 + CO -> 2Fe^3O^4 + CO^2}\]
\[\ce{Fe^3O^4 + 4CO -> 3Fe + 4CO^2}\]
\[\ce{Fe^2O^3 + CO -> 2FeO + CO^2}\]
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संबंधित प्रश्न
Write the names and chemical formulae of any one ore of zinc.
Write the names and chemical formulae of any one ore of iron.
Write chemical formulae of the following ores :
(a) Calamine
(b) Haematite
(c) Magnetite
(d) Corundum
Out of C and CO, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
Draw neat and labelled diagram of Bessermer converter used in the extraction of copper.
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What is the role of limestone in the extraction of iron from its oxides?
What is the role of coke in the extraction of iron from its oxides?
Indicate the principle behind the method used for the refining of zinc.
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(i) \[\ce{CaCo3 -> CaO + CO2}\]
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(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
(ii) \[\ce{FeO + SiO2 -> FeSiO3}\]
(iii) \[\ce{Fe2O3 + 3C -> 2Fe + 3CO}\]
(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]
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Which of the following is not an ore of magnesiuim?
Match List - I with List - II.
| List - I | List - II | ||
| (One) | (Composition) | ||
| (A) | Siderite | (I) | FeCO3 |
| (B) | Malachite | (II) | CuCO3 · Cu(OH)2 |
| (C) | Sphalerite | (III) | ZnS |
| (D) | Calamine | (IV) | ZnCO3 |
Choose the correct answer from the options given below:
Calamine and Malachite, respectively, are the ores of ______.
